The processing effect of a product is determined by the joint effects of cnc router machines and router bits. If you want to get a satisfied finishing on the job, you must choose the proper router bits for the jobs. Different jobs need different router bits. A lot of friends do not know how to select the router cutters according to the jobs. We are going to share some of our experience here and hope it can be helpful for you.

For acrylic cutting jobs, the recommended router bits are the A or AA series acrylic cutting single flute spiral cut router bits. This type cutter is special for acrylic material cutting purpose. It has advantage of no smoke, no smell, high speed, high efficiency, no sticking when cutting. Its special manufacturing process guarantees the acrylic not to explode the mouth after cut and the surface is very smooth. If you want the frosted effect on cutting finish, recommend cnc router tools are double flute or three flute spiral router cutter tools.  

For jobs of acrylic mirror engraving, the recommended engraving bits is the highlights series engraving bits.

To engrave mini letters, it is better to use single flute or double flute spiral slope flat cnc cutter bits. Single flute is prior to double flute on effect of cutting surface.

To cut aluminum sheet, it is better to use aluminum router bits one flute spiral router cutter. Using this router bits, we can cut without water cooling. Advantage of this cnc cutter bits is no sticking in cutting process, smooth surface, fast speed and high efficiency.

If you are going to cut density board, suggested router cutter is double flute large spiral cnc cutter bits. It has two big capacity debris removal slots; with double flute design, not only has a good debris removal performance, but also can achieve very good tool balancing.  Use it to process high density board, not black, not burning knife, long service life. Bigger diameter router bits is more suitable for thicker acrylic cutting like 20mm thickness and the surface can achieve polishing grade effect. 

For small size relief, suggested engraving bits are radiused bottom engraving router bits and ball nose spiral router bits. To make deep relief on softwood, MDF, native wood, PVC and acrylic, proper engraving bits is ball nose single flute spiral engraving bits.

Advantage of spiral downcut router cutter is that there is no rag on the machining surface. It is ideal for materials like thin laminated board, synthetic board, acrylic sheet and resin sheet.

To learn more, please read the second part of this topic ‘How to Select Proper Router Bits for Your Job (Ⅱ)’

                                                                                      Origin article from Jinan EagleTec CNC Machinery Co., Ltd.

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